Firstly the genre that matters
Messiah (Noisia RMX) - Konflict
Bacteria (Pendulum Rmx) - Ed Rush & Optical
Ni Ten Ichi Ryu (Teebee Rmx) - Photek
LK - DJ Marky & XRS
Thats enough dnb now for the other tracks
Organ Donar (extended overhall) - DJ Shadow
Finished Symphany - Hybrid
Bricolage - Amon Tobin (entire album)
Summer Days - TZU
Final Home (Piano Mix) - DJ Krush
Take Five - The Dave Brubeck Quartet
now while these may not be real well known tracks, i think everyone should have them, mainly so i have something to listen to when i steal their ipods